Wednesday, November 15, 2006

Can You Asphalt Pave a Driveway in Winter

By Mark J. Donovan

Frequently I get asked the question by homeowners on whether or not a driveway can be asphalt paved in winter.

The answer depends on whether or not the ground is frozen. Simply put, if the ground is frozen do not allow the asphalt paving contractor to apply the asphalt. If it is applied when the ground is frozen it will not roll to grade well. The asphalt arrives on the job site extremely hot allowing it to be easily spread and rolled to grade. However, if the hot asphalt is poured onto a frozen surface such as the ground, the asphalt will immediately begin to stiffen or freeze up.

Even if the asphalt driveway is able to be rolled to grade while the ground is frozen it will result in a poor quality driveway that will quickly begin to break down. The reason for this is the aggregate material embedded in the asphalt will not be firmly packed with the asphalt, thus resulting in stones quickly becoming loose.

If, the temperature is below freezing, but the ground has not yet frozen it is acceptable to have the Asphalt paving contractor install the asphalt driveway. Unlike a frozen ground, below freezing air temperatures will not dramatically affect the rate of hardening of the asphalt material. Thus the asphalt paving contractor will be able to roll the asphalt to grade and achieve the right level of compression.

To conclude, if you live in the northern half of the United States, and it is already December it is probably wise to hold off any asphalt paving projects until spring time.

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